/*
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package z.h.w.jar.kit.clazz;

/**
 *
 * @author EnzoZhong
 */
public class Watch {

      private Long start;
      private Long end;

      /**
       *
       */
      public Watch () {
            start = System.currentTimeMillis ();
      }

      /**
       *
       */
      public void stop () {
            end = System.currentTimeMillis ();
            System.out.println ( end - start );
      }

}
